I'm about to audition a bent TAP-X autoformer passive. I'm sure the Job will sound wonderful with it. I've been listening a lot lately and honestly guys, the more I listen, the more I'm blown away by the transparency, detail, soundstage depth and width. The VERY articulate bass. I've been listening to some live Mary Stallings (one of my references), and the midrange warmth just sounds so right. This is such a lovely little amp. If there is anyone reading this who is on the fence about buying one, I can't recommend it highly enough.